大约有 40,000 项符合查询结果（耗时：0.0228秒） [XML]
从网购到火车票，对比淘宝12306网为何如此烂？ - 大数据 & AI - 清泛网 - ...
...到让人“一票难求”的订票网站-12306。12306网站购票难的问题几乎成了所有人的共识。来自前支付宝架构师冯大辉(@Fenng)的这条微博翻出12306这笔账，别有一番滋味。
以冯大辉的计算方法，支付宝11月11日一天就处理了1亿零580万...
写出高质量代码的10个Tips - 更多技术 - 清泛网 - 专注C/C++及内核技术
...。
基础的数据结构与算法，掌握好这些在解决一些特定问题时，可以以更加优雅有效的方式处理。
基础的设计原则，无需完全掌握23种经典设计模式，只需要了解一些常用的设计原则即可，甚至你也可以只了解什么是低耦合，...
JSON Naming Convention (snake_case, camelCase or PascalCase) [closed]
Is there a standard on JSON naming? I see most examples using all lower case separated by underscore, aka snake_case , but can it be used PascalCase or camelCase as well?
...
How can I measure the speed of code written in PHP? [closed]
How can I say which class of many (which all do the same job) execute faster? is there a software to measure that?
10 Answe...
What is the difference between an interface and abstract class?
...'t do anything. It's just a pattern.
For example (pseudo code):
// I say all motor vehicles should look like this:
interface MotorVehicle
{
void run();
int getFuel();
}
// My team mate complies and writes vehicle looking that way
class Car implements MotorVehicle
{
int fuel;
vo...
How to destroy an object?
... objects as soon as the page is served. So this should only be needed on really long loops and/or heavy intensive pages.
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你不得不知道的6个用好大数据的秘诀 - 资讯 - 清泛网 - 专注C/C++及内核技术
...时候，利用太复杂先进的数据分析工具往往也会带来很多问题， 不过如果我们能够通过分析大量的数据来得到最终的结果，那就不用怀疑了，你就干吧，至少方向肯定是对的。
秘诀二：要区分清楚“森林”和“树”
现在，企...
Better way to check variable for null or empty string?
...solves it, I'm not sure if it's simpler. +1 anyway
– Allain Lalonde
Dec 19 '08 at 15:36
4
Since O...
What is an abstract class in PHP?
...re interface. Also interfaces are a special case of abstract classes where ALL methods are abstract.
See this section of the PHP manual for further reference.
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PHP exec() vs system() vs passthru()
...
They have slightly different purposes.
exec() is for calling a system command, and perhaps dealing with the output yourself.
system() is for executing a system command and immediately displaying the output - presumably text.
passthru() is for executing a system command which...